. >> the fat is in the fire because of these remarks to cnn by the doctor who served as president bill clinton's white house doctor. >> i worry he may have a heart attack, a stroke. it's almost like a time bomb waiting to happen unless he addresses those issues. and i worry about this man dieing in office. >> i find it fascinating that a doctor in arizona who has never met me, never examined me could make a diagnosis from 2400 mile is a way. she must be a genius. my children saw that last night. and she sat there on tv and said i'm afraid he will die in office. my 12-year-old son comes up to me last night and says dad are you going to die. >> christie rage is a total about face from his merry appearance on david letterman. watch as he squirms around unable to skeedle -- skeetle his bull nooct chair and then this stunning statement. >> basically the healthiest fat guy you seen in your life. >>> christy even munched oan doughnut while speaking with letterman. >> i didn't know this was going to be this long. >> the letterman appearance creating a buzz. across the air waves in you can laug